Mauney won the Southern Rodeo Association (SRA) junior
all-around title in 2002 and the adult all-around title in 2004. He joined the PBR in 2005 In his first year of competition, he won the 2006 PBR Rookie of the Year. Mauney is one of only five riders to get a qualified ride on Asteroid which he accomplished on the BFTS in
San Antonio, Texas, in August 2012, for a score of 93.50 points. Asteroid, the 2012 World Champion bull, earned a high score of 46.25 points. In August 2013, he became one of only three riders (during the bull's entire career) to stay on
Bushwacker for the full eight seconds. He achieved this on the
Built Ford Tough Series (BFTS), the elite series of the PBR, for a score of 95.25 points (in
Tulsa, Oklahoma). Mauney won the PBR world championship title twice, in 2013 and 2015. He also won the PBR World Finals event twice, in 2009 and 2013. Mauney won the bull riding title during first edition of
RFD-TV's The American in 2014. On November 5, 2016, Mauney made PBR history by being the first bull rider to reach the $7 million mark in career earnings. In 2017, Mauney suffered a significant injury to his right arm, requiring surgery to install a screw and 13 anchors. Mauney's career has been plagued with many injuries, but he has continued to pursue professional bull riding history. "It's part of being a cowboy", he stated in an interview with
Monster Energy, "when you crawl in to a chute, nothing else matters. You tie your hand and you don't give up until you hit the dirt". In an interview for the PBR, Mauney said "What gets me is when people who don't ride bulls for a living try to tell me when it's time to hang it up". In 2019, Mauney tied another two time world champion
Justin McBride for the most televised wins within the 26-year history of the PBR. By the end of 2020, he had qualified for the PBR World Finals 15 times in his career (2006 through 2020). Since 2020, Mauney has been part owner of Ultimate Bullfighters (UBF), an
American freestyle bullfighting organization. After struggling to find success during the first few events of the 2021 PBR season, Mauney decided to try his luck in the PRCA. Although he joined the PRCA in 2009, he only competed sporadically at PRCA events from 2009 to 2020. In July 2021, Mauney announced that he would step away from riding in the PBR to focus solely on riding in the PRCA and try to qualify for the
National Finals Rodeo (NFR). He would qualify for and compete at his first NFR in December of that year. Mauney was well on his way to qualifying for the NFR again in 2023. However, on September 6, during the PRCA Xtreme Bulls Division 2 event at the Lewiston Round-Up in
Lewiston, Idaho, Mauney was bucked off by the bull named Arctic Assassin and landed on his head. The wreck ended up breaking his neck and he had surgery two days later, which required a rod, plates, and screws, as well as the removal of a disc. Four days later, Mauney announced his retirement from bull riding. "This is not the way I wanted to go, but everything happens for a reason", he said. In early 2024, Arctic Assassin, now also retired, was purchased by Mauney and moved by his owners to spend his remaining days on Mauney's ranch in
Stephenville, Texas. ==Post career==